VintaSoftTwain.NET Library generates PDF documents compatible with version 1.4 of PDF specification and these documents are compatible with PDF/A standard. Each page of PDF document contains one image.

Thank you for your reply. I scanned a document with VintaSoftTwain.NET and saved it as a PDF file. After that I opened it with Adobe Acrobat Professional 8 and checked the PDF/A 1a compliance. Unfortunately there are some errors:
- File header not compliant with PDF/A
- ID in file trailer missing or incomplete
- MarkInfo missing
- PDF contains data after end of file marker

Do you have a fix for the problems? However VintaSoft TWAIN.NET is very good and I will use it even if there are no solutions to the problems.